Valve.



E. HAZELIP.

VALVE.

APPLICATION FILED MAY e, 1911.

Patented Sept. 24, 1912.

y citizen of the vUnited EDWIN HAZELIP,

" B. TBIMBLE,

OFBALTIMORE, MARYLAND, 0F BALTIMORE, MARYLAND, CUMMINGS, 0F MELVALE, MARYLAND.

AssIeNon or ONE-FOURTH To THOMAS AND ONE-HALF To ALEXANDER L.

- vAtvn..

Specication of'Letters Patent.

Patented Sept. 24, 1912.

Anneau@ mea may e, 1911. serial No. 625,502.

4To all whom it may concern:

Be it known that I, EDWIN HAzELiP, a

States of America, residing in the ycity-of Baltimoreand State of Maryland, have invented new and useful Improvements in Valves, of which the following is a specification.

This invention relates to valves, and has for an object to provide an improved form of seat therefor removably mounted in the diaphragmv` in the valve and disposed directly ,in tracting screw which latter can be operated or adjusted so as to engage 'the seat and remove the same' from lthe diaphragm when it is desired to regrind theseat or to substitute a new one for a worn onet In the drawing, forming a portion ofi this specification and in which like numerals ,of reference indicate similar parts in the several views Figure 1 is a side elevation of a valve with vparts in section to clearly illustrate the seat construction, ing screw being in its lowered position.`

Fig. 2 is a similar view showing the extract-`- ing screw adjusted to a position to en age the seat so as to move the same away rom the diaphragm.

The valve 1 may be known construction in so way and configuration of ture is concerned, valve stem 2 on which is formed a threaded portion 3- for engagement with an interiorly threaded-portion 4 of the valve. The stem is provided with a nut 5 which is adjustable of any suitable well far as the portthe valve strucon the exteriorl threaded portion 6 of the carries a suitable packing 7 to bear against the edge ortion 8 of the valve to reventleakage. T ethreaded portion '3 o the valve stem is provided with a depending reduced portion 9 which is formed with a flat face 10 against which a fiber washer v11 is seated and held by the adjusting screw 12, which latter extends through the washer and into a correspondthreaded passage in the portion 9. e`valve chamber 13 is formed with a diaphragm 14 which has an opening 15 therein to receive the hollow valve seat 16. The seat 16 has its lower end extended below the diaphragmv and dis osed directly in the path of movement o the extracting valve and whic theI path of movement of an ex-v the extract- .and through the opening 1n and enga ed being provided with ascrew 17. The screw 17 is removably fitted 1n a correspondingly threaded assage 18 in the lug 19 of the valve body, tite upper end of the passage being formed'with a flared surface 20 to be en aged by the corresponding surface on the ead 21 of the extracting screw. The passage 15 is slightl larger in dia-meter than the diameter of t e head 21 vof the extracting screw so that on one movement of thescrew the head maybe brouvht to bear against the lower end of the va ve seat 16 to loosen the same from the diaphragm and to permit the same to be removed withthe screw. The upper surface of the valve seat is formed with astop flange 22 which engages against the upper surface of the diaphragm so as to limit the movement of the va ve seat in one direction and -to prevent the same from being moved entirely through the passage 15.

From the construction described it will be seen'that when the valve stem is removed a screw-driver or other suitable tool can be inserted through the opening 23 of the valve the valve seat in .the kerf 24 in the headed portion o the screw. The screw can then be rotated to cause the same to move into engagement with the valve seat so as to permit t-he latter to be entirely freed or"re leased from the diaphragm.

I claim 4 A valve seat comprising a hollow member, a support havin an aperture therein an adapted to slida ly receive the said seat, a removable valve seat extracting element disposed immediately below the said seat and arranged in axial alinement therewith, the said extracting element being formed to provide a head having a slightly lesser diameter than that of said seat, the said extracting element being adapted to move in an upward direction whereby the said head engages the lower end of the said seat so as tomove the same to an extracted position from the support.

-In testimony whereof I atlix 'my signature in presence of two witnesses.

C. ARTHUR EBY, C. CRAIG SEARS. 

